The Dorman 84502 Charging System Analyzer is a must-have for any automotive enthusiast. This tool allows you to test both your battery and alternator, ensuring that they are in top shape. The brand, Dorman, is known for their high-quality diagnostic service tools and this one is no exception. The manufacturer part number, 84502, is easy to reference and the product falls under the categories of Other Diagnostic Service Tools, Diagnostic Service Tools, and Automotive Tools & Supplies. With this tool, you can rest easy knowing that your charging system is in good hands.